An SRV record is a DNS record, which is used to redirect a domain name to a third-party server and use it for some service different from a site. This can be a Voice-Over-IP server, a video streaming service, an instant messaging system, etc. When an SRV record is set up, you can specify an Internet Protocol which the domain will use and the port, which is to be used to connect to the remote server. Furthermore, provided that you have numerous SRV records for the same service, you can set various priorities and weights for each and every one of them, in order to send out the load between several machines. Such a record will allow you to use the same domain name or subdomains under it with different providers, so you could employ it for many purposes even if you cannot get all services from a single service provider.